Soil Mechanics
Soil Fundamentals
CONTENTS
Part 1 Soil Mechanics What Is Soil? ...................................................................page 1 Soil Groups .....................................................................page 1 Grain Size Limits.............................................................page 2 Soil Properties and Characteristics...................................page 2 Soil Analysis ....................................................................page 7 Moisture Content............................................................page 9 Atterberg Limits ............................................................page 10 Soil Classification ..........................................................page 13 AASHTO classification system ......................................page 14 Unified classification system ..........................................page 16 FAA classification system...............................................page 19 Summary of Identifying Clues for Gradation and Plasticity .....................................page 22 Part 2 Embankment Compaction..............................................page 25 Controlling Factors........................................................page 25 Soil Moisture - Density Tests.........................................page 31 Laboratory Tests ............................................................page 31 Field Density Tests ........................................................page 35 Specifications.................................................................page 39 Job Layout.....................................................................page 41 Equipment Selection .....................................................page 40 Compaction Equipment Selection.................................page 42 Part 3 Base and Sub-base Compaction ......................................page 50 Sub-base Soils................................................................page 51 Aggregate Bases
CONTENTS
Part 1 Soil Mechanics What Is Soil? ...................................................................page 1 Soil Groups .....................................................................page 1 Grain Size Limits.............................................................page 2 Soil Properties and Characteristics...................................page 2 Soil Analysis ....................................................................page 7 Moisture Content............................................................page 9 Atterberg Limits ............................................................page 10 Soil Classification ..........................................................page 13 AASHTO classification system ......................................page 14 Unified classification system ..........................................page 16 FAA classification system...............................................page 19 Summary of Identifying Clues for Gradation and Plasticity .....................................page 22 Part 2 Embankment Compaction..............................................page 25 Controlling Factors........................................................page 25 Soil Moisture - Density Tests.........................................page 31 Laboratory Tests ............................................................page 31 Field Density Tests ........................................................page 35 Specifications.................................................................page 39 Job Layout.....................................................................page 41 Equipment Selection .....................................................page 40 Compaction Equipment Selection.................................page 42 Part 3 Base and Sub-base Compaction ......................................page 50 Sub-base Soils................................................................page 51 Aggregate Bases